Updated | Api-ms-win-core-memory-l1-1-6.dll Missing

How to Fix "api-ms-win-core-memory-l1-1-6.dll is Missing" Errors

Encountering the error message "The program can't start because api-ms-win-core-memory-l1-1-6.dll is missing from your computer" can be a frustrating experience, especially when it prevents you from launching your favorite games or essential work software.

This specific DLL (Dynamic Link Library) file is part of the Windows API Sets, which help software communicate with the Windows operating system. When this file is missing or corrupted, the "handshake" between your app and the OS fails.

Here is a comprehensive guide to resolving this issue and getting your system back on track. 1. Update Windows to the Latest Version

The api-ms-win-core series of DLL files are often tied to specific Windows updates and the Universal C Runtime (CRT). Go to Settings > Update & Security > Windows Update. Click Check for updates.

Install all pending updates, including "Optional updates," as these often contain driver and framework fixes. Restart your computer. 2. Install or Repair Microsoft Visual C++ Redistributables

Most api-ms-win errors are caused by a missing or broken Visual C++ Redistributable package. These packages contain the libraries needed by many apps to run.

Download the latest Visual C++ Redistributable for Visual Studio 2015, 2017, 2019, and 2022 from the official Microsoft website.

Important: If you are on a 64-bit system, install both the x86 and x64 versions. api-ms-win-core-memory-l1-1-6.dll missing

If already installed, choose the Repair option during the setup process. 3. Run the System File Checker (SFC)

Windows has a built-in tool designed to find and automatically repair missing or corrupted system files like api-ms-win-core-memory-l1-1-6.dll. Type cmd in the Windows search bar. Right-click Command Prompt and select Run as Administrator. Type sfc /scannow and press Enter.

Wait for the process to finish. If it finds errors, it will attempt to replace the missing DLLs from a local cached copy. 4. Use DISM to Repair the System Image

If SFC cannot fix the issue, the Windows system image itself might be corrupted. Open Command Prompt as an administrator again.

Type the following command and press Enter:DISM /Online /Cleanup-Image /RestoreHealth Once finished, run the sfc /scannow command one more time. 5. Reinstall the Problematic Application

If the error only appears when opening one specific program, that program’s installation might be damaged.

Uninstall the app via Control Panel > Programs and Features.

Download the latest version of the installer from the official source. How to Fix "api-ms-win-core-memory-l1-1-6

Reinstall the app, which should register the necessary DLL dependencies correctly. ⚠️ A Critical Warning: Avoid "DLL Download" Sites

When searching for this error, you will see many websites offering a direct download of the api-ms-win-core-memory-l1-1-6.dll file. Do not download files from these sites. Security Risk: These files can contain malware or trojans.

Incompatibility: A DLL file from a random site may not match your system version, leading to further "entry point not found" errors.

Versioning: DLLs work in sets; replacing one manually rarely fixes the underlying issue with the framework. Summary Table: Troubleshooting Steps Target Issue Difficulty Windows Update General system compatibility VC++ Redistributable Missing runtime libraries SFC / SCANNOW Corrupted system files App Reinstall Isolated software corruption

By following these steps—starting with Windows Updates and the Visual C++ Redistributables—you should be able to resolve the "api-ms-win-core-memory-l1-1-6.dll missing" error without needing a full system reinstall.

Check if the problem is solved

After installing updates:

  1. Restart your PC.
  2. Run the application again.
  3. If the error persists, check C:\Windows\System32\ for api-ms-win-core-memory-l1-1-6.dll. It should exist after KB2999226.

Solution Guide

2. Install the Latest Visual C++ Redistributable

Sometimes the UCRT is included with newer Visual C++ runtimes.

4. Manual File Copy (Not Recommended – Use Only as Last Resort)

If none of the above works and you absolutely must run the app: Restart your PC

  1. Download the correct version of the DLL from a trusted source (e.g., a clean Windows 10 installation’s C:\Windows\System32\).
  2. Copy it to:
    • C:\Windows\System32 (64-bit) or C:\Windows\SysWOW64 (32-bit app on 64-bit system).
  3. Run regsvr32 api-ms-win-core-memory-l1-1-6.dll (often not required for API sets).

⚠️ Warning: Downloading DLLs from third-party sites can introduce malware. Use this only if you can get the file from a known clean Windows 10 machine.

Solution 1: Update Windows (The Most Likely Fix)

The error often appears when a user tries to run modern software on an older version of Windows 10 (or Windows 7/8). The file ...l1-1-6.dll suggests a requirement for a specific API set that may have been introduced in a newer update.

  1. Press Windows Key + I to open Settings.
  2. Navigate to Update & Security (or Windows Update).
  3. Click Check for updates.
  4. If updates are available, install them.
  5. Crucial: If you are on Windows 10 or 11, ensure you install the Feature Updates (major version upgrades), not just cumulative updates. This error is common on older builds (like version 1507 or 1607) that are no longer supported.

Why this works: Microsoft constantly updates the ApiSet schema. If the program requires version "6" of the memory API, an outdated Windows build might only have version "0" or "1." Updating Windows installs the missing schema files.

Preliminary Checks

Before diving into complex fixes, try these quick checks:

  • Restart your PC – A simple reboot can clear temporary glitches causing the error.
  • Reinstall the problematic app – Uninstall and reinstall the software that shows the error.
  • Run Windows Update – Go to Settings > Windows Update and install any pending updates.

If these don’t work, proceed with the detailed solutions below.

Frequently Asked Questions (FAQ)

Q: Is api-ms-win-core-memory-l1-1-6.dll a virus?
A: No. The legitimate file is published by Microsoft. However, malware sometimes uses similar names. Always check the digital signature: Right-click the DLL > Properties > Digital Signatures tab. It should show “Microsoft Windows”.

Q: Why does this error only happen with one specific game or app?
A: That app was compiled with a newer Visual Studio version that requires this specific DLL. Updating your system’s runtime libraries (Method 1) is the solution.

Q: Can I just copy this DLL from another computer?
A: Only if the other computer has the same Windows version and architecture (both 64-bit, same build number). Otherwise, you may cause “side-by-side configuration is incorrect” errors.

Q: Will resetting my PC fix the issue?
A: Yes, a full reset (“Keep nothing” option) will fix it, but it’s a last resort. Use Method 7 (In-Place Upgrade) first.

Review: “api-ms-win-core-memory-l1-1-6.dll Missing” Error

Overall Verdict:
⚠️ Not a true DLL error – it’s a Windows version/compatibility issue.
This error is almost always misleading. The file is not a standalone DLL you should download from random websites. It is part of the Windows API-set contract, and the error indicates your application was built for a newer version of Windows than what you’re running.